RFR: 8337511: Implement JEP 404: Generational Shenandoah (Experimental) [v7]

[William Kemper]

On Fri, 15 Nov 2024 15:12:30 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> The new test TestAllocOutOfMemory.java#large failed on some PPC64 machines:
>> 
>> Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "main"
>> 
>> java.lang.RuntimeException: 'java.lang.OutOfMemoryError: Java heap space' missing from stdout/stderr
>> 
>> Probably not a show-stopper. Should the test be adapted or disabled for this platform?
>
>> @TheRealMDoerr - do you have the logs from the test failure? If so, could you open a ticket with them in JBS? Thank you!
> 
> Filed [JDK-8344312](https://bugs.openjdk.org/browse/JDK-8344312).
> 
> In addition, we see the following tests failing with "java.lang.OutOfMemoryError: Java heap space" on all Shenandoah platforms:
> gc/stress/jfr/TestStressBigAllocationGCEventsWithShenandoah.java#default
> gc/stress/jfr/TestStressBigAllocationGCEventsWithShenandoah.java#generational
> Can you reproduce those?

@TheRealMDoerr - Yes, those tests failed for me. I'll look into them. I'm also working to get my hands on a PPC64 machine to investigate [JDK-8344312](https://bugs.openjdk.org/browse/JDK-8344312). We appreciate your help here!

-------------

PR Comment: https://git.openjdk.org/jdk/pull/21273#issuecomment-2480152786